so are you just running a command line command like:
shake -script myscript -t 1-500
?
im actually running a c shell script that actually seds a shake script template, kicks out a new script and then calls that script from the command line.
haven't had a chance to give it a test yet - i'll let you know what i find. i can definitely at least open the shake script in the gui and see if that brings it back to life.